export const BIRTHDAY_DAY = 25;
export const BIRTHDAY_MONTH = 4;
export const BIRTHDAY_YEAR = 2002;

export const getAge = (now = new Date()) => {
  const hadBirthdayThisYear =
    now.getMonth() > BIRTHDAY_MONTH - 1 ||
    (now.getMonth() === BIRTHDAY_MONTH - 1 && now.getDate() >= BIRTHDAY_DAY);
  return now.getFullYear() - BIRTHDAY_YEAR - (hadBirthdayThisYear ? 0 : 1);
};